Type-writing machine.



0. S. NIGKBRSUN. .TYPE WRITING MAUHINE.

Arrmh'rlon FILED Mu 1, 190s.

Patented Mar. 9, 1909. '7 SHEETS-SHEET 1.

C. S. NI'GKBRSON. TYPE WRITING MARINE. ArrLxouxoxr FILED un 199s.

914,667. Patented m9991999. 'I SHEETS-SHEET 2.

@L pm G. S. NIQKERSON. TYPE WRITING MACHINE.

APPLIOATION FILED' MAY 1, 190e.

9 1 4,667 Patented Mar. 9, 1909.

I SHEETS-SHEET 3.

G. S. NIGKERSON.

TYPE WRITING MAOHINB. Arrmoulox Hman nu 1. 190e.

MIMI! n i u Patented Mar.9, 1909.

7 SHEETS-SHEET 4l @sul C. S, NICKERSON. TYPE WRITING MAUHINE. APPLIUATION FILED un 7, 190s.

Patented Mar. 9, 1909*. 'r SHEETS-HEBT 5.

yC. S. NIGKBRSON. TYPE WRITING MACHINE.

APPLIUATION FILED nu v, 190s.

914,667. Patented Mar. 9,1909.

G. S. NIGKERSON. TYPE WRITING MACHINE. APPLIUATIQN FILED nu '1, 190s.

914,667. f Patent-.ed Mar. 9, 1999. A 1 Bums-snm 1.'

l zarZeJjfCam/z- 4mm.; Jy my Ww UNITED srnrns PATENT enrich.

CHARLES S; NICKERSON, OF EVANSVILLE, INDIANA, ASSIGNOR TO NILKERSON 'lYlEWRI'lER y COMPANY, OF RACINE, WISCONSIN, A CORPORATION Ol" WISCONSIN.

TYPE-WRITIN G MACHINE.

Specification oi' Lettera Patent.

Patented' mmh 9, 1909.

Application tiled` Mey 7, 1906. Serial No. 316,638.

Tou/ll 'whom' "it may concern:

d'Be it `l'mown'that I', (hrAnLns S: NicnnnsoN, a citizen of the United States, of Evansville, irl-the county ofVandei-burg and State of Indiana, have invented certain new and use- .ful Improvements in Ty e\V1-iting 4Machines; and I do herebydec are that the following is a full, cles-r, and exact description thereof, reference being' had to the eccompanyingdrawin s, and tothe characters of Reference merke thereon, which form a part of this specification.

This invention relates to` those parts of a typewriting machine, involved,in support ing thesheet ef paper to be written upon and for giving line .space and letter space movenient tot efsheet.

The parts of the mechanism of a .typewriting machine hereinefterdescribed and halving rotative showndnthe accompanying drawings constitiite part of a completem-.rchine ofthe kindset-forthinmy prior application for United-States Letters Patent, Serial Number 234,705, filed in 'the U: SfPatent Office on or about November 29th,-1904 and which, in'tsA entirety, will embrace type-bar actuntiingmechanismysuch as is shownlin a prior a phcationforUnited. States Letters Patent, Sr-inbNo. 273,067, -led in the U. S. Patent (BficeAugust 7th;-1905,- a platen-shift mech anism, such `es-shownina prior a plieation for United-States Letters PatentA -eriaiNoI 286,379, med-November 8th, 1905, and a nir-imminent, suchshown iny n prior i eriel-No. 286,378, filed' Novemberth, 1905.

The paper supporting and actuating devices ,i il nsti-atedI 1n the d rnwi-ngs, emhra ce, asthe principal features thereof,

a paper helderof-segmential form,

or of sector-shape, or oscillatory movement 'articulav a Avertical axis,r to provide for the letter-space movement of the sheet of paper which is attached and moves with said pauper holder, and also having vertical bodily movement` to giveline-space movement to said `sheet of. A per In connection with such aper holgr ere employed stationery curve guides arranged concentrically with the paper holder 'and actin to hold the paper in' the Iformcof a c'ylin rical segment corresponding inwcurvature with the curved edge bf the paper-horldenfto which thesheet imattaohed at its uppeiwed egdevices'lfor clamping or otherwise attac ingthe *sheet of paper to the curved edge of the said paper holder, mechnnisin lor iving swinging movement to the paper ho der about its vertical axis, nn escape mechanism for gi-vinv' Vstep by step movei'nent to the paper hfilder for letter spacing, mechanism for retrnctin'g the said paper holder or returning it to its starting point, means for releasing the paper holder, from its letter-spacing mechanism and stopping its swinging movement at predetermined points;.mechanism for elevating thefpeper holder step-by-step to effect line-spacing, devices for releasing the paper holder from the line-spacingdevices and returning it to its starting point, means forgiving to the paper holder verticai movement to bring it in any desired positiom. and means for varying thel linespacing movements to give spaces of different widths between the lines of Writing.

As shown in the uccompanying `draw- "urev l is a. side elevation ofthe ri ht han side of the machine illustrating ony the parts there located. Fi 2 is a side elevation of the left hand si e of the nmchine showing only the parts at such left hl (l si e. 'Fi is a central vertical section showing :t 1e main o erative parte of the machine. Fig.- 4 is a iiorizontel section teken on ahorizontal plane a short distance' above the base plate on line 4--4 of Fig. 3. Fig. is a plan section ofthe top part of the machine taken online 5 5 of Fig. l. Fig. 6 is, a detail perspective view of' the rocking frame for operating the key locking mechanism and bell-trip. Fig. 7 is a perspective view of the right hand end of the scale bar of the machine, showing the ad justa ble lever for'the bell-trip and the outer end of thev lever for movin the peper holder. Fi v. S is a detail section, taken on line 8-8 o Fig. 5. liig. 0 is a detail section, taken on lino` Q) of Fig. 5. Fig. 10 is .n.ldetuil vertical section of the rear Stnlionnry column of the machine, taken on a plane mrnllel with the front ot' the machine nml snowing in detail tliemecimnism i'or elevating step-hy-stop the iper holder for line-spacing. Fig. Il is n etul view,l taken on line' 11-'"11 oi Fig. t, of the locking mechanism forming n part of the device for releasin and dropping the paper holder. Fig; `12 is a detail sectional elfwnton of the devices-fm' writing on the left hand margin of the paper, taken on lino lQ-IQ of Fig. 4.

llU

'ash

Fig. 13 is a front view partly in section of the key-locking mechanism. Fig. 14 is a plan view of the paper holder. Fig. 15 is' a detail view of the locking and releasing del. vice at the left hand side of the paper holder formin a part of the mechanism for operating t 1e paper clamp. Fig. 16 is a sectional view, taken on line 16-16 of Fig. 14 showing one of the slides constitutin a part of the paper holding mechanism. ig. 17 is a plan view of the aper holder showin the paper clamps in t e1r open or released ositions. Fig. 18 is a view of the paper older'as seen from beneath. Fig. 19 is a detail section of one of the column stop devices, taken on line 19-19 of Fig. 4. Fig. 20 is a detail section, taken on line 20-20 of Fig. 4. Fig. 21 is a detail view of the erasing clamp for the paper.

As shown in the said` drawin' 1 is the horizontal base-plate of the mac ine which is provided with supporting lugs or feet. 2, 2. Attached to and rising from the rear part of the base-plate is a hollow column or stationary standard 3, the lower end of which terminates somewhat above the base-,- plate and which is rigidly attached to the ase-plate by means or a rearwardl extending lug a on said standard (Fig. 3 secured to a lug a1 which rises from the base-plate. Within the standard 3 is a verticall movable hollow shaft 4. The bore of t e hollow standard 3 is smaller at the bottom than at the top of the standard and the hollow shaft 4 is made exteriorly of corresponding diameters, being smaller at its lower than at its upper part. Between the downwardly facin shoulder on the said hollow shaft 4 and t e lower part of the hollow standard 3, is located a spiral spring 6, which tends to keep the shaft 4. normally in its elevated position. Shiftmechanism, for giving endwise movement to the shaft 4 and parts attached thereto, will usually be employed for shifting the platen vertically for lprinting from one of the three types on t e typebars of the machine, but parts constituting A such shift-mechanism are omitted from'the accompanying drawings, the same constituting the subject-matter of my separate aplication for 4United States Letters Patent gerial Number 286,379', hereinbefore referred to.

.Within thehollow shaft 4; is located a vertically sliding rod4 5, provided on one of its sides with ratchet-teeth havin downwardly facing shoulders. Attach to the upper end of said rod 5 is a horizontally ar ranged plate 7 having'l an arm which projects forwardly from t e rod and which carries an u ri ht bearin -screw 8 having an enlar ed gea ',b whic' it may be tui-'ned in the p ate 7, wit which said bearin' -screw has screw-threaded e ement. T e part of said plate 7 engage y 'said screw 8 is shown 'as slotted or forked in such manner that the parts thereof at opposite sides of the slit exercise a clamping action on the said screw, tending to hold it firmly at any point to which. it may be adjusted. The screw 8 is made tubular to receive an upright bearing-spindle 9, which revolves freely therein and is provided at its upper end with a head that is received within a recess formed in the head of the screw 8. The head of the spindle 9 is rovided with a downwardly facino conical earing surface and the head of the screw 8 with a corresponding interior upwardly facing bearin surface and between said surfaces are re erably located antifriction balls or ro 1ers, as shown. The bearing-spindle B is rigidly attached at its lower end to and su orts a vertical, endwise' movable rod 10 w ich extends downwardly throuvh and has endwise, slidin engagement wit an upright hollow aft 11, located in front of and ad- 'acent to the hollow shaft 3. The rod 10 las s lined connection with the hollow shaft 11'I ig. 4? so that said rod and shaft have endwise siding or telescopic engagement with each other, but turn or rotate together.

12 is the paper-holder of the Amachine which consists of a segmental plate or sector-shaped iece of metal arranged hori zontally an Vrigidly secured to the upper end of the rod 10 with its curved peripheral surface arranged concentrically with respect to said rod and facing toward the front of the machine. The paper to be written upon is attached at its upper margin to thecurved forward edge of said paper holder, being bent into the form of seg ment of a cylinder and thelower part of the sheet hangs or depends from said forward edge of the paper holder to which it is attached. The position of the paper is indicated in Fig. 3 by the dotted line 13. Devices are provided for securing the upper edge of the sheet or sheets of paper to the curved forward edge of the aper-holder as will be hereinafter described.)

Lateral oscillatory or swinging movement of the aper-holder about a vertical axis is affordedl by the rotation of the hollow shaft `11 in the machine frame, while vertical movement of said aper-holder is afforded by the sliding of t e rod 10 in t-he hollow shaft 11. The rod 5 is connected with the rod 10 and the paper-holder by the devices, described, so that 1t moves vertically therewith, and said rod 5, being the medium through which vertical lifting movement is imparted to the paper-holder for line-spacing is herein called the liftin -rod.

16 indicates the platen o the machine. VSaid piaten has the form of a wheel or dat disk and is mounted in a horizontal position, with its central axis vertical, at' a .pomt' centrally in front of the hollow standard 3 and rod 10 and beneath the forward marginal part of the sector-shaped paperholder. Said platen is 19-(F ig. 5) which extends generally in a direction from front to the rear of the machine and is adjustably secured by screws 21, 21 to a horizontal late 20, which latter plate is rigidly securedJ to the upper end of the hollow shaft 4. The screws 21, 21 `pass through elongated holes in the arm 19 thereby allowing'said arm to be adjusted longitudinally on the plate 20 and an adjustingscrew 22 engages said arm 19 and a part of the plate 2O at the rear of said arm. Said screw 1s surrounded by a spiral spring 23 which is interposed between the rear end of the arm 19 and the part of the plate 20 engaged by the adjusting screw, and tends to force or press said arm 19 and the platen thereon forwardly. Said adjusting-screw and spring afford means for accurately adjusting the platen in position with respect to the paper-holder and the type-bars of the machine.

`as that shown in 1n Figs. 3 and 5, 14 indicates one of the type-heads of the machine and 15 an inked ribbon which extends between the tvpeheads and the platen. The machine will be equip ed with the usual orany desired number o type-bars, only one of which is shown in the drawings. The type-bars are arranged in two groups, one on each side of the machine and strike to a commonl center upon the platen 16. Said type-bars are arranged in the manner fully set forth and illustrated in my prior application for United States Letters Patent Serial before referred to.

The face of the platen 16 is wide enough verticallyto cover only one of the three characters or types upon the type-head, as seen in Fig. 3, and said, platen is shifted vertically to bring it opposite either of said types upon the type-head by the use of any suitable shift-mechanism, such, for instance, my prior application for States Letters Patent Serial No. 286,379,- hereinbefore referred to. `The face of the platen may be made of rubber or some other elastic material, orthe whole platen may be made of such material.

United In the `operation of printing, the sectorshaped paper-holder is swung horizontally from left to right about its vertical axis of rotation to carry the paper horizontally past the printing point for letter-spacing and said paper-holder is elevated or raised vertically step-by-stepQa line-space distance at a time, for line-spacing. In order that the lower part of the sheet of paper which hangs o'r de ends from the curved forward margin of t ie paper holder may be held or retained in its curved form during its movement past the platen and at the same time held or retained substantially in contact carried upon an arm No. 273,067 hereinsaid frame consist of forward uprights position to bear lightly upon the forward face of the platen, two stationary paper-guides 17 and 18 are cm loyed which have the form of uprirht cy indrical se ments, and are arranged parallel with eac other and concentric with the rod 10 or pivotal axis of the paper holder. Said paperguidesl are arranged at such distance apart to leave between them a narrow guide space or passage wide enough to receive a sheet, or such number of sheets, of paper as may at one time be attached to the paperholder. The said segmental paper-guides 1T and 18 are shown as having their upper edges about at the level of the top surface of the platen 15, and as being notched or cut away opposite or in front of the platen; the inner or rear guide 17 being thus provided with an opening through which the forward part of the platen projects while the outer or fm'ward guide is provided with an opening through which the types act upon the paper.

1n the with or in particular construction .illustrated the inner guide plate 17 is secured near its top to a forwardly rejecting, horizontal plate or arm C formedJ on or rigidly secured to the upper end of the stationary hollowstandard Theiower end of said inner guide-plate is rigidly secured to the baseplate 1, so that said geule-plate forms a part of the frame of the machine. The outer or forward guide-plate 18 isv secured at its side margins to the nvv right lateral frame members A of the mac inc which constitute parts of the stationary frame in which the typebar mechanism 1s mounted. Other parts of A1 Al, lateral, curved, oblique connecting members A2 A3, a curved plate A4 extending between the upper parts of the forward uprights A1 A1, an upright frame member A located midway between said forward frame uprights, a horizontal, transverse framemeniber A extending between the uprights A1 A1 and projectin at their ends beyond the same at both sides of the frame, and standards A7 A? which support the ends of said transverse member A from the baseplate. The lower edge of the forward guide-plate 18 preferably terminates a considerabledistance above the base-plate in order to give room for parts there loca-ted and for convenience in cleaning the machine.

In inserting the paper into the machine it is thrust between the guide-plates 17 and 18 at the right hand side of the machine and carried along between the guide-plates toward the left until brought in position beneath the paper holder, the sheet being bent by the guides into curved form so that its upper edge may be easily clam ed to the correspondingly curved front edge of the paper-holder '12. To elevate the paper holder for line-spacing 'a step-by-step moves ment is given to the lifting-rod 5, which rod, being connected at its upper end Vwith the rod 1G through the screw 8 and bearing spindle 9 transmits a corresponding movenient to said rod I0 and the paper-holder attached thereto. For effecting such step-bystep elevating motion, a vertically reciproeating pawl 24 operates in connection with the ratchet-teeth on the side of the said rod 10 5 in the manner illustrated in Figs. 4 and 10. Said pawl 24 is pivotally connected with the upper end of an upright rod 25 mounted to slide vertically at its upperend in a bearing block 26 attached to the standard 3.

The actuating spring 27 for said pawl is shown as havin the form cfa wire spring of Ulform attac ed at its ends to and rising from the bearing .block 26. A coiled sprin 28, surrounding the rod 25 and interpos between the lower surface of the bearing block 26 and a block 29 on the lower part of the rod 25, tends to keep the pawl normally depressed and free from contact with the ratchetfteeth on the rod 5, the parts 25 being so constructed that when the pawl is depressed it bears against the lower edge .of the slot in the hollowstandard through which it projects for engagement with the ratchet-teeth, said lower edge of the slot be- 30 ing arran ed in proper position to hold the` free end o -the pawl away from said ratchetsecond pawl- 33,

teeth when the pa'wl is in such depressed position. When the rod 25 is elevated, however, the spring 27 brings the point of the pawl into position for engagement with the said ratchet-teeth, so that each time the pawl is moved upward it will engage onegot said ratchet-teeth and carry the rod 5 up wardly with it. It follows that by giving 40 an up-and-down vibratory movement to said pawl, the lifting-rod 5 will be elevated or ifted regularlystep-by-step and the paper holderfwill have a corresponding movement. The rod l0, with the :iper-holder thereon, i5 will be free to revolve or letter-space movement; the weight of said rod 10 and the paper-holder being carried by the bearing spindle and antifriction rollers which engage the adjusting screw 8. By turning the said screw 8 in the plate 7 the paper may be accurately adjusted vertically with respect to the platen or striking point of the type, enabling-the printing to be done exactly Vu on a ruled line or upon any desired part o the paper.

The pawl-supporting rod 25 is attached at its lower end t'o the block 29 which is piyoted to the end of a crank-arm 30, rigidly attached to a rock-shaft 31 which is arranged horizontally above the base-plate of the machine and extends in a direction from front to rear of said base-plate (Fig. 4).' Said rock-shaft is provided with a second rigidly attached crank-arm 32 which extends therefrom in a direction opposite the arm 30 and `toward the right-hand side' margin of the base-plate.

At a point above the pawl 24 is located a which is pivoted at its upper end to the hollow shaft 4 and is pro- '7o vided with a tooth which extends inwardly through the slot in said hollow shaft 4 and engages the ratchet-teeth on the said rod 5. A spring 34 resses inwardly on the pawl 33 and holds 1t normally in engagement with 75 said ratchet-teeth. Said pawl 33 serves as a holding pawl to maintain the rod 5 from descending after being elevated by the ac'- tion of the pawl 24.

In the particular constructionillustrated from its engagement with the ratchebteeth,

as is necessary when it is desired to permit the paper-holder to descend, a horizontal trip-arm 35 is attached to a vertical rockshaft 36, with its free end behind the down- Wardl extending arm of said pawl 33. The rock-s iaft 36 is mounted to turn at its upper end in the plate C and at its lower end in the base-plate. Near its lower end said rockshaft 36 1s provided with a rigidly attached 90 horizontal crank-arm 37 (Figs. 4 and 10), that extends outwardl over the base-plate to a point near the right hand margin of the same. The arr'n 37 is given a horizontally swinging movement through the medium of a horizontal operating rod 38 (Figs. 1 and 4) which extends from front to rear of the machine above the base-V late and at its forward end is connected wit the y depending arm of a key-lever 39 of a bell 100 crank shape. The key-lever 39 is pivoted at its rear end to a standard B on the baseplate. For holding said keylever 39 in its elevated position and the horizontally swinging arm 37 atthe vforward limit of its 105 .movement, a coiled spring b is shown as con nected with the lever 37 and with a plug b* on the baselate in front of the said lever (Fig. 4). T e forward swing of the arm 37 may be limited by a stud b2 on the baseplate. The rear end of said actuating bar 38 is shown as extending transversely over the arm 37, and as e aging said arm 37 through the medium o an upright headed stud on the arm engaging a longitudinal slot 115 or loop at the rear end of the said bar 38 (Fig. 11). The key-lever 39 is provided at the forward end with a key 40, the depression of which will act through the bar 38 and arm 37 to rotate the rock-.shaft 36 and 120 thereby withdraw the pawl 33 from engagement with` the ratchet-teeth on the rod 5, thereby allowing the whole paper-carrying mechanism to drop by its own weight.

To prevent any jar or strain upon the 125 mechanism when the paper-holder and connected parts 'are so dropped, the hollow shaft 4 is closed at its-lower end and the lower endhpf the rod 5 is adapted to tit ac*` curately e bore thereof, so that an airthe lower 5 descends cushion will be formed within part ot' the shaft as the rod therein.

In order to avoid the necessity of holding down the key-lever 40 until the rod 5 an paper holder have made their full descent, have provided means for locking the triparm 35 in its retracted position so as to hold the pawl 33 free from the ratchet teeth on said rod. For this purpose a latchplate ll, seen more clearly in Fig. 11, is arranged at one side of and pivoted to the operating rod 38 at a oint above the crankarm.32; said latchlgate being pivoted at one end to the arm and being free to rise and fall at its opposite end by gravity. Said latch-plate 41 is provided with a down- `wardly extending tooth adapted to engage the crank-arm 32, and havin a vertical face or shoulder which faces orwardly or toward the front or' the machine. These parts are so arranged that when the key 40 is depressed and the bar 38 thereby moved rearwardly to carry the free end of the' arm 'rearwardly, the tooth of the latch 4l will drop over and engage the arm 32 so that the bar 38 will be held or locked by .said latch from returning, and the pawl 33 will thereby be held temporarily out of engagenicnt with the ratchet-teeth on the said rod YYhen, however, the crank-arm 32 is next depressed, by the devices hereinafter described, for line-spacing, said arm will he swung downwardly clear of the tooth on the latch 41 and the bar 38 will then move forward, permitting the pawl 33 to again come into its normal or operative position.

In order to steady the upper end of rod in the vertical movement of the paperholder. especially when the paper holder and connected parts are in the elevated position thereof. a guide rod 42 is rigidly secured `to a rearwardly projecting part of the plate C on the top of the hollow standard 3 and is engaged by a rearwardly extending part of the arm 7 on said rod 5. Said guide-rod extends upwardly from the plate C and also downwardly therefrom. The rear part of the plate C is provided with a slit or notch extending transversely thereof, through the opening which receives the guidelrod 42, and with a clamping-screw 43 that extends through the arm formedy on said plate C b said slit or notch, and serves to draw sai arm toward the body of the plate to hold the rod 42 from endwise movement in the said plate. The rearwardly extending parts of the arm and plate 20. both of which are vprovided with guide apertures for said rod 42, slide freely upon the latter in the line-space movement of thc rod 5 and the platen-shift movement of the hollow shaft 4. vSaid rod 42 is adjustable vertically in the plate C` and is adapted to be secured in any desired vertical position by the Ciampino' screw 43. ln the position of parts shown 1n the drawings. the rod 42 is in an intermediate osition. but wheuthe machine is adjnste for operating upon sheets of paper of considerable length, said rod 42 will be slid u `wardly throughthe plate C so that it w51 extend far enough above said plate to constitute a guide for the plate 7 during the entire vertical movement of the paper-4 holder.

In order to provide means for givin the operator warning when the bottom o` the sheet of paper is reached, as the paper is fed upwardly in its line space movement, devices are provided as follows; The guide rod 42 is made in the form of a tube and within the same is a rod 44 adapted to slide freely in endwise direction therein. The rod 44 is rovided at its lower end, which projects elow the rod 42, with a laterally extending locking arm 45 pivoted to turn on the said rod and adapted to engage the teeth of au upright rack bar 46, which is arranged adjacent to and parallel with the rod 42 and has a limited endwise movement; the teeth of said rack-bar being s aced to correspond with the teeth on the r 5. The upper end of said rack bar 46 slides freely in a slot in the plate C and at its lower end said rack-bar is pivotally connected with a lever 48 (Figs. 2 and 4) which extends along the rear edge of the base-plate and is pivote between its ends to the latter by a horizontal pivot permitting the lever to Swing in a. 100 vertice plane. The opter end of the said level' 4S, which is located adjacent to the left hand side of the base-plate, extends beneath and is adapted to operate a locking dog 49, hereinafter describe i At the top of the rod 44, the same is provided with a forwardly extending tooth 47,l which rojects through a slot in the rod 42 and is lJon enough to extend outside of the outer sur ace of said rod 42. The rod 42 110 will be clamped to the late C at such elevation that the plate i) when moved upwa rdly with the rod 5 and the paper holder, will engage the tooth 47 when the paper is in position for writing thereon the last or 115 bottom line. The plate 7 thereafter, Iby its action on the tooth 4?, lifts the rod 42 and thereby elevates the rack-bar 4G so as' to swing the lever 48 on its 1pivot in a manner to depressv the outer or 1e t hand end there- 120 of, and thereby operate the locking-do 49. Said locking-dog operates to lock rom, movement the devices provided for return; ing the paper-holder to its starting Vpoint in beginning a new line of writing, as will be 125 hereinafter described.

Provision is made for lowering the liftingrod 5 and the paper-holder one tooth or line-space at a time. Devices for this `purpose enrbrace an cndwise movable actuating 1.30

` and the key-lever bar 51, arranged horizontally above the baseplate of the machine and adjacent to the right hand ed e of said baselate, and extending from ront to rear o the machine. Said rod 51 is adapted to slide at its rear end horizontally in a lug 52 (Figs. l and 4) which rises from the base-plate, and its forward end is connected with the depending arm of a. bell-crank key-lever 53 which is ivoted to the standard B and has a keyl 54, ocated at the front and right hand side of the machine. For holding the rod 51 normally at the forward limit of its movement 53 elevated, a coiled spring c connected with the depending arm of the key-lever and with the standard B1 may be used. The bar 51 is deflected upwardly at its rear end and its inclined rear portion extends over and engages the outer end of the crank-arm 32 on the rock-shaft 3], through which the elevating The stud 52 is located just to the rear of the arm 32 and said arm 32 is located in position for the action thereon of the inclined lower edge of the bar 51 when the latter is pushed rearwardly b the action of the key-lever 53. The rearwar movement of the said bar 51 de resses the arm 32 just far enough to bring the oint of the pawl 24 inside of the oint of tie ratchet-teeth upon the rod 5, ut not far enough to bring thc pawl into engagement with said ratchet-teeth. The rear end of the bar 51 is,r moreover, located in line with and in position to act upon the righthand end of the horizontally swinging arm 37 of the upright rock-shaft 36, through which the holding pawl 33 is operated. These parts are so arranged that wh en the bar 51 is moved rearwardly it swings the free end of the arm 37 toward the rear, thereby withdrawing the holding pawl 33 from en agement with the rod 5 and allowing the atter to fall until the tooth thereon next above the pawl 24 comes into Contact with said latter pawl and arrests the further descent of the rod. By repeating the movements of parts through successive operations of the key 54 the rod V5 with the paperholder may be lowered step-by-step. To prevent the bar 3S and key 40 from bein moved in this operation of the arm 37, witi which said bar 38 is connected, the rear end of said bar 36 is connected with the arm 37 by a headed-stud on the arm engaging a slot in the rear end of the bar38, as hereinbefore described, the loose connection thus aliorded enabling thearin 37 .to be pushed rearwardly by depression of the key 40, while at the same time said arm 37 may move freely backward when shifted by the action of the key 54, by reason of the sliding connection between said bar 38 and said arm 37.,

To give the horizontal swinging movement of the paper-holder upon its axis, rc-

Bli quired in. letter-spacing, an actuating spring pawl 24 is operated.l

or move said paperholder toward the ft and an escapement mechanism operated by the several keylevers of the machine is rovided for controlling the movement ci) the said paperholder to give letter-space movements as the several keys are struck. As shown in the accompanying drawings, said actuating spring has the form of a volute-spring 55 (Fig. 3) mounted in a` barrel 5h (Figs. 3 and. 13) which is arranged below and concentrically with the hollow shaft 1l, and is adapted to revolve in a circular opening in the base-plate l. The said hollow shaft 11 extends downwardly into said barrel and its is applied to swing lower end has bearing in the flat bottom wall of the barrel. The inner end of said volutespring is attached to the shaft 11 and its outer end to the barrel. The barrel 56, as shown in the drawing, Fig. 13, is held in place on the base-plate by cli s 57 attached to the under surface of the base-plate and overlapping the marginal part of the barrel. Said barrel has around its lower edge, gearteeth which engage a worm-screw 5S on a horizontal shaft59 having bearings in the base-plate and which extends to the left hand side of the latter. Said shaft 59 is squared at its outer end for the application of a key., by which the shaft and springbarrel may be turned and the tension of the spring 55 thereby regulated with cxactness. The rod l0 being free to slide endwise in the hollow shaft 11, but being held from rotation therein by a splined connection, it follows that the spring 55 by its action on the hollow shaft ll tends to constantly turn or swing the paper holder in a direction toward the left, whatever may be the vertical position of said paper holder.

To the lower end of the hollow shaft 1l (Figs. 3 and 4) is rigidly attached a toothed gear-segment' 60 which extends forwardly from said shaft, as clearly seen in Fig. 4. Mounted horizontally on the base-plate in front of the gear-segment (3() andin intermeshing engagement therewith is a larger gear segment 61 provided with a forwar ly projecting rigid arm G2. The said gearsegment 61 is rigidly attached to an upright shaft 67, the lower end of which en ages and turns in a bearing aperture in the aseplate l and the upper end of which has pivotal bearing block 133 attached to the central part of the front guide-plate i8, as clearly seen in Fig. 3. Beneath the gear-segment 61 and mounted to revolve loosely upon the shaft 67 isa ratchet-wheel 63. The peripheral teeth on said ratchet wheel are engaged by a pawl 64 which is mounted on the lower surface of the gearv segment 61. The` shoulders of said'ratchet-teeth face toward thc left, at the front of the ratchet-wheel, so that the pawl 64 holds said ratchet-wheel engagement with and turns in aA pivot, into engagement with the ratchet wheel. A gear-wheel 66 which is larger in diameter than the l'atchet wheel is rigidly attached to the latter below the same and adjacent to the base-plate. Said gear-wheel G6 has intermeshing engagement with apinion G8 mounted to turn on a vertical axis, and to the upper end of which is secured an escape-wheel 69. Said escape wheel is located above the level Aot the gearsegmcnt (il.

7 5 is a horizontally arranged rock-shaft which extends across the front of the machine above the base-plate adjacent to and in front of the escape-wheel 69. ligidly attached to said rock-shaft at a` point opposite the escape-wheel is an escapement-dog 7() the rear end of which is in position for engagement with said escape-wheel G9. and pivotally connected with said dog, by a pivot, at right angles to the shaft 75, is a viln'ating-dog 71 the free end of which is also located in position for engagement with said ratchet-wheel. The movement of the vibrating-dog 7l is limited by separated studs 72 and 73 on the said dog 70. Said dog 71 is thrown toward the right and held against thc stud 73 by a spring 74. shown in the drawing as having the form of a light leaf-spring extending longitudinally of and attached at its outer end to thc shaft 7.1. The said sha ft 75 is shown as mounted at its ends in bearings formed by conical-ended screws inserted horizontally through lugs B1 B1 which rise. from the base-plate 1. The vibrating-dog 71 stands normally in engagement with the tee-th of the escape-wheel 69 and at such time rests against the stop-stud 72. By rocking the shaft 75, the dog 71 is released from and the dog 70 engaged with one of the teeth of the escape-wheel. The dog 71 is pressed, by the action of the paperholder actuating spring 55, against the stop stud 73, and upon rocking the shaft 7 5 back to its normal position one tooth of the wheel 69 is allowed to escape or pass the escapement dogs.

A spring 77 (Fig. 20). shown as having the form of a coiled-spring` iC applied to hold the shaft in its normal position, or with the escapement dogs depressed and the swinging dog 7l in engagement with the teeth of the escapement wheel. Said spring is shown as being attached at its rear end to a downwardly projecting rigid arm 78 on the shaft 7 5. For convenience in adjusting the tension of said spring 77 it is attached at its forward end to an arm which projects laterally from a horizontal, endwise sliding shaft 79 that extends from front to rear of the machine, and is mounted in two guide lugs that rise from the base plate of the machine. An adjusting screw 8l) having rotative envagement with a lug on the forward edge oiP the base-plate engages theforward end of the shaft 79 in such manner as to draw the same forward, the shaft being held from turning in its bearings by means ot' a pin 8l inserted .in the rear bearing-lug of the shaft and engaging a longitudinal groove in said shaft 79. The screw 8() is shown as provided with a square head so that it may be turned by a key.

To the rock-shaft 75 are rigidly attached two rearwardly projecting crank-arms 823, 82 (Figs. 1 and 3) through the medium of which the said rock-shaft and the escapement dogs are actuated. To the rear end of each of the arms 82 is pivoted a connecting bar 83 which rises from the said arms and at its upper end is pivoted to a vertical sliding rod 84; there being one of these rods on each side of the machine and said rods-being mounted to slide vertically in the parts of the machine frame by which the type-bar mechanism is supported. Each of said rods 84 is provided with a number of horizontal pins 85, 85 extending forwardly therefrom, the number of said ins corresponding with the number of typears in the machine.

S6, 8G indicate the key-levers .ofthe machine from which the type-bars are operated. The connections between said key-levers'aml the type-bars as well as the features of 'construction in the saidV type-bars and the mounting thereof are like the corresponding parts set forth in my prior application for United States Letters Patent Serial No. 273,067, hereinbefore referred' to. These parts are illustrated in the accompanying drawings only so fanas necessary to an understanding ofthe present invention and so far asillustrated in said drawings embrace features as follows.

To the. key-levers are pivoted upright links 87. to the upper ends of which are secured upright connecting rods 88. Said rods 8S are connected at their upper ends with forwardly projecting arms 89 on horizontal rock-shafts 90 which are mounted in the framenprights A* and A of the machine. Attached to the rock-shafts 90 are second crank-arms 91 which rise` from the rock-shafts and are preferably of curved form. The crank-arms 91 are, by horizontal. rearwardl f, extending connections 92 (Figs. 1, 2 an 3) connected with the horizontal, rigid arms 93 on upright rock-shafts 94 to which the type-bars are attached. The horizontal rock-shafts 90 are provided each with a third, rigid, rearwardly projecting arm 95, that extends horizontally therefrom and engages at its near part with one of the pins S5 upon one of the vertically sliding rods 84. In the machine illustrated, the several rock-shafts 90, 90 belonging to the group of type-bars at each side of the machine are located one above another and each of the two vertical rods 84 is equipped with a number of pins 85, 85 correspondin in number and vertical distance apart wit i the several rock-shafts 90. The pms 85 are made long enough to be bent slightly up or down in order to secure accurate adjustment of the letter-spacing for each key'upon' the machine. When any key-lever is depressed, one of the rods 84 will be lifted, thereby actuating the rock-shaft 75 to opcrate the escapement dogs and ermit the movement of the paper-holder a etter-space distance. 215 indicates the space-bar of the machine, which extends transversely in front of the key-levers 8G. Said space-bar is attached to the front ends of two space-bar levers 216 which are pivoted to standards B* B* on the base-plate. The rear ends of the levers 216 extend beneath forwardly projecting lugs on the upper ends of the connecting bars 83 (Figs. 1 and 2), so that when the space-bar is depressed, the said connecting bars and the rear ends of' the arms 82, 82 on the rock-Shaft 75 will be elevated, with the effect of turning said rockshaft and actuating the spacing dogs carried thereby to give spacing movement to the paper-holder.l

Mechanism for back letter-s acin or for shifting the paper holder bac war ly step- [1y-step, a letter-space distance at a time, is provided as follows: The gear-segment 61 has on its right hand edge (Fig. 4) a lurality ot ratchet-teeth which have t eir shoulders or holding edges directed rearwardly. 96 is a sprin -pressed pawl, pivot-ally connected with t ie end of a lever 97, which is pivotally mounted between its ends on the base-plate of the machine so as to swing in a horizontalV plane. Said lever 97 is thrown by a spring 98 in a direction to carry the free end or point of the awl into engagement with the ratchet-teet on the gear-segment 61, but when the end of the lever 97 bearing the pawlis thrown rearwardly the free end of said pawl restsagainst a stationary pin 99 in the base-plate and the pawl is thereby held out of en agement with said ratchet-teeth. When, owever, the right hand end of said lever 97 is thrown toward the rear of the machine the pawl will come into engagement with the ratchet-teeth and move or turn the segment in n direction to swingthe latter backward, so as to turn or carry the aper holder1 backward against the action ofp its actuating spring. For operating the lever 97, its outer 35 pr right hand end is engaged with the for- -vated position.

ward end of a horizontal connecting bar 100, the rear end of which is pivoted to the depending arm of a key-lever 101, which, as clearly shown in Fi 1, is pivoted t0 a standard B on the vase-plate, and which has a forwardly extending arm rovided with a key. The spring 98 acts to raw the right hand end ot' said lever forwardly and to hold the key-lever 101 normally in its elelVhen the key-lever 101 is thrown downwardly or actuated by the finger of the operator, the said right hand end of the lever 97 is thrown rearwardly against the action of the spring 98 and the awl 9G will then come into engagement with the ratchet-teeth on the gear-segment 01, so that by swinging or movin of the key-lever 101 downwardly the desired distance, the gear segment 61 may be rotated backwardly one or moreJetter-spaces as may be desired in order to bring the aper-holder or paper to the point requiredp for the insertion of a leiter when an erasure has been made, or for other like purpose.

To provide means for returning the paperholder to its starting point or for swinging it from left to right to carry the paper into position for beginning a new line of writing, devices are provided as follows: 102 is a gear-segment which is loosely mounted upon the shaft 67 above the gear-segment 61. Engaged with the teeth of said se ent 102 is another gear segment 104 which 1s pivoted t0 the base-plate of the machine and at a point adjacent to the left hand edge of the same, as seen in Fig. 4. The gear segment 104 is o erated by means of a connecting rod 105 (Figs. 2 and 4) that is arranged horizontally and extends rearwardly from the segment 104 above the base-plate. The rear end of said rod 105 is connected with the lower end of the depending arm of an angular key-lever 106 located at the left hand side of the machine. Said key-lever 106 is pivoted to an upwardly extending standard Bs on the base-plate, located at a point near the rear edge of the latter. The forwardly projecting arm of the lever 106 is provided with a key or finger-piece which, when depressed, thiows backwardly the lower end of the depending arm of said lever and thereby gives, through the connecting rod 105, a corresponding rcarward movement to the gearsegment 104.

The gear-segment 102 is held normally in its position to the right, and the segment 104 in its forward position b a coiled spring 107. Said segment 102 1s adapted to be turned from its normal position toward the left by the backward movement ol the segment 104, when the latter is swung inwardly by downward pressure on the key-lever 106, and said gear-segment 104 is adapted, when so turned to the left, to strike a stud 103 which rises from the gear-segment 61, thereby turning the latter gear-segment in a dto give line-space movement. By the derection to swing the gear-se ent 60 on the hollow shaft 11 toward the r1 ht, and swinging or turning the paper hol er in the same direction and back to its starting point for beginning 'a new line of writing. In its turning movement, the said gear-segment 00 passes beneath the stationary hollow shaft 3, which latter is attached to the base-plate through the medium of the rearwardly projecting lug a on said shaft and the lug a1 on the base-plate, as hereinbefore described. After the paper holder has been rotated back to itsstarting oint for beginning a new line of.writing, t e key-lever 106 is released and a spring 107, returns said gearsegments 104 and 102 to their normal positions so that these parts'will not interfere with the swinging movement of the gearsegment 61 in the subsequent operation of the letter-spacing mechanism, as the paperholder swings or moves toward the left by the action ofthe spring` 55, under the control of said spacing mechanism.

In the machine illustrated, provision is made for automatically lifting the paper holder, to effect line-spacing, at the time said paper-holder is swung back, by theoperation of the lever 106, to its startmg point for the beginning of a new line. For this purpose, a construction is provided as follows: As seen in Fig. 2, 108 is alink which connects the paper-holder returning key-lever 106 with a crank-arm 109 which is attached to and extends rearwardl from a rock-shaft 110 that extends horizontally across the front of the machine above the base-plate and is mounted at its ends in standards B6 BT on the base-plate, as clearly seen in Figs. 1, 2, 3 and 4. At its ri ht hand end, said rock-shaft 110 is provide with a rigidly attached crank-arm 111, (Fig. 1) which. eX- tends rearwardly therefrom and is adapted to act or press downwardly upon a horizontally arranged pin 112 that extends across the path of movement 'of said arm 111, as clearly seen in Figs. 1 and 4. The pin 112 is mounted adjustably in the forward end of a lerer 113 that extends from front to rear of the machine and is pivoted at its rear end to the standard Bs on the rear part of the base-plate. This lever is shown as made double or rovided with two pairs of arms both of whlch are slotted for the passage of the pin 112, which pin is adapted for adjustment l1n the slots of said arm 113 longitudinally thereof. Thevlever 113 has ivotally connected with itfa depending ink 114, the lower end of which 1s notched or otherwise constructed to embrace the right hand end of the vertically swinging crankarm 32 hereinbefore described, this being the arm of the rock-shaft 31 through the medium of which is' actuated they vertically movable pawl 24 by which the rod 5 is lifted pression of the key-lever 106 not only will the paper be returned to position for the'beginnin of a new line, but at the same time throng the rock-shaft 110 the arm 111 thereon, the lever 113 and its depending link 114, the arm 32 of the rock-shaft 30 will be depressed Vand the pawl 24 moved upwardly so as to lift the pa er-holder a distance of one line-space, as ereinbefore described. The double-levels 118 are shown as pivotally connected at their rear ends by a horizontal pivot to the standard Bs and the depending link 114 is shown as extending at its upper end between the said lever 113 and is connected therewith by a horizontal pivot ext-ending from said levers and through a hub at the upper end of the arm. This construction permits the lower end of said link 114 to swing freely and at the same time act with downward pressure on the arm 32.

The pin 112 which, as before stated, is adjustable endwise upon or with relation to the double lever 113 is made so adjustable for the purpose of regulating the space between the lines and provision is made for shifting or adjusting said pin lengthwise of the lever 113 as follows.

115 (Fig. 1) is a connecting rod which is attached to the pin 112 and extends rearwardly therefrom to the upper end of a swinging lever 11G, pivoted at its lower end to the standard Bl in such manner that its upper end may swing forwardly and rearwardly in a vertical plane. 117 is a horizontally arranged, endwise adjustable rod which is pivoted at its rear end to the level' 116 and extends forwardly along the baseplate above the same and slides at its forward end in the standard B on the baseplate. Said rod 117 passes through a slot in said standard BT and is provided in its lower edge with a number of notches adapted to engage a horizontal pin 118, which extends transversely through the slot in the said standard B. A spring 119 is attached to the standard and bears downwardly upon the rod 117 so as to hold either one of the notches thereof in engagementjwith the pin 118. These notches'upon the rod 117 are so arranged or spaced that a uniform downward stroke of the crank-arm 111 will raise theV rod 5 a distance equal to one, two or three of the teeth thereon, according to which one of the three notches in the under.

side of said rod 117 is engaged with the pin 11S. The key 120 is secured to the forward end of the sliding rod 117 for convenience in changing the space or distance between the lilies.

In order to provide for elevating the paper independently of the lever 4106 by which line spacing is automatically accomplished, a separate or independent device is key-lever provided for this purpose embracing the end to the standard B3 on the base-plate and which extends forwardly from its pivot over a pin 122 (Fig. f1) which is rigidly attached to the forward end of the innermost of the. two levers 113 and projects laterally `therefrom into the path of the said lever 213. vWhen said lever 121 is depressed by downward pressure of the linger on its key 123 it acts upon the lever 113 to depress the same and thereby depresses the arm 32 so as to actuate the line space lifting pawl 24 independently of the operation of other parts; it being manifest that by repeatedmovements of the lever 213, the paper holder may be lifted to any extent desired and brought into position for printing at any line on the sheet.

I have further provided in connection with the features of construction above described, means for warning the operator when the bottom of the sheet of paper is reached or when there is no rooin for printing additional lines. As hereinbefore described, the uide rod 42 is clamped in position at a heig t corresponding with the length of the sheetv to be written upon. For the convenience of the operator :1. numbered scale is provided either upon the rod 42 or upon the vertical rack-bar 46, as shown in Fig. 2. As hereinbeiore described, when the bottoni of the paper is reached the plate T will litt the slidin rod 44 by contact with its tooth 4T and w1ll thereby litt the rack d6 by the action of the latch 45. At this time the rack 16 will operate to lift the inner end of the lever L1S and the outer end of said lever will be depressed. Said outer end of the lever l5 engages the rearwardly extending arm of the ockingdog 49, the forward end of which is located in such position that when elevated it will come in position behind the lower end of the lever 106 and thereby pre vent the movement or actuation. ot said lever. A spring 5U acts upon the forward end of the lockingdog 49 and tends to lift the same into its locking position, but thc lever 4S stands normally in such position that its outer or left hand. end bears upwardly against hc roar end of said looking-dog and holds its forward end depressed against the action of said spring 50. When. however, the inner end of said lever 43 is litted through the upward movement of the rack-- bar 46, its outer end is correspondingly depressed. The dog 49, being then no longer held with its forward end deyu'essed. is thrown by the spring 50 into position for engagement with the lever 106. Upon reaching the last line of the sheet. therefore,,the operator will be free to complete the printing of such lust line. but cannot actuate the key-lever 106 either to return the paper which is pivoted at its rear holder or to effect the line-space movement thereol and is thereby warned that the insertion of a fresh sheet of paper into the machine is necessary.

The machine illustrated includes mechanism for stopping the letter space move! ment ot' the paper-holder at any desired point for tabulating or like work. These features are shown inFigs. 1, 2, 4 and 19. Upon the base-plate 1 and forward of the path. traversed by the forward end of the arm 62 on the gear-segment 61, are located i a vertically sliding piston 122 (Fig. 19)

provided with a stop-arm 123 which projects through a slot in the lower part olf the column in such position that it may be brought into the path of said arm (32 and wili stand in the path of said arm G2 when the piston 122. in its elevated position. A coiled spring 2d, located in column beneath said piston, presses upwardly on the piston and tends to hold it in the path of the arni (52. The said spring 124- interposed hetween an internal shoulder oi the column 121 and a head or enlargement on the upper end of the piston. 125, 125` indicate pivotally supported lteyelevcrs which extend forwardly from the columns 121 with their rear ends over the pistons 122. Springs 126, strong enough to overcome the springs 124, act downwardly upon the inner ends of the hey-levers 12T. Said springs 128 hold the pistons normally depressed, with the stops 123 thereof below the plane of os- (filiation olli the arm (i2, The several keylevers 125 are shownin the drawing es pivA otally supported on a horicontal roch-shaft 128, which extends transversely across the front of the machine above the base-plate. Said rock-shat`t is mounted at its ends in hearing lugs which rise from the said base plate. Higidly attached to said rovli-shnii 128 and extending rearwardly therefron'i is a bail ,129 the central part of which in parallel with the rock-shaft and extends 'over und in Contact with the inner ends of the several key-levers Said shaft 128 is provided near its ends with two depending rigid crank-arms 1311 which are pivoted nl. their lower ends to forwardly projecting :Unis .132 on :i liorivz-:mially arranged, sliding plate 131 which located above the erin ('52 and adjacent to the margin of the gear-segment til. The rerA curved conrcnirically with the said gearsegrnent and is ada ted for engagement with the pin` 65 upon t e pawl (il. Said plate 131 when pained rearwardly by the tnrnllo use

edge oi said plate lill is f -ing of the rock-shaft 128 engages and forces v pawl 64 from the ratchet wheel 63.

V:at

rearwardly against the The several levers 125 are provided at their forward ends with keys which bear figures corresponding with the letter-space position of the arm 61, when the latter 1s in engagement with the stop-arms 123 on the several columns. In the operation of these parts, when one of the keys is depressed, its key-lever 125 lifts the bail 129 and by rocking the shaft 128 (on which the key-levers freely turn) throws the sliding plate 131 pin thus releasing the pawl 64 from the ratchet-wheel 63 and allowing the ear-segments 61 and 60 to freely revolve t rough the action of the main actuating spring 55. At the same time the piston 122 is allowed to rise, under the action of the spring 124,' until the stoparni 123 comes into the path of the arm 62, and thereby stops said arm and the paper holder' at a point upon the scale corresponding with the ligure upon the key-lever 125 which is depressed.

Devices are provided for releasing the paper-holder from they letter-spacing nicchanisni and revolving said holder horizontally to bring the paper in a desired osition with respect to the striking point o the type, as follows: 135 is a laterally swinging keylever, provided with a button or key at its forward end, and located at the front of the machine near its to The vertical shaft 67 to which the gear-segment 61 is attached, extends upwardly to and has bearing engagement with the block 133, as before stated, and said shaft 67 is provided in the principal part of its length with a longitudi- ,nal slot in the upper part of which the rear end of the key-lever 135 is pivoted by a transverse pivot-pin. The key-lever 135 has a downwardly extending, rigid, vertical arm 134, which extends downwardly in the slot in the shaft 67. At its lower end the vertical arm 134 engages the -rear end of a horizontally arranged, endwise movable, connectin bar 136, which extends in a direction from ron-t to rear of the machine above the gear-segment 61 and the forward end of which 1s enga ed with the pin 65 upon the pawl 64, as c early seen in Figs. 3 and' 4. By depressing the forward end of the keylever 135, the bar 136 is carried to the rear, thereby shifting rearwardly the pin 65 and drawing the pawl 64 out of engagement with the teeth of the ratchet-wheel 63. The gearsegment 61 is thus released from engage- Vment with the ratchet-wheel 63 and-said 60 gear-segment 61 with the gear 60 and the paper-holder is free to be turned by swing lng the key-lever 135 laterally, it being thereby possible to release theA paper-holder from its actuating device and to revolve the same horizontally to bring any desired part .and over the key-lever `135.

of the paper opposite the printing point. It will of course be understood that when the paper-holder is thus released from the letter-spacing mechanism it still remains under the influence of the actuating spring 55, which tends to throw or turn said pa per holder toward the left, but the paper-holder may be stopped at an desired point by releasing' the downwar pressure on the keylever 135 and thereby permitting the pawl (14 to again engage the ratchet wheel 63.

The key-lever 135 is shown as extended at. its.forward end through a horizontal slot formed in the curved front plate A* of the frame of the machine. In order to enable the operator to determine accurately the position to which the paper-holder is swung or moved by the actuation of the key-lever 135, an arc-shaped scale bar 137 is attached to the part A* of the frame, and extends horizontally above the slot in the plate A* Said scale-bar is provided with a scale which is marked to correspond with the letter-spaces and numbered in the usual manner. The lever 135 is also desirably provided with a pointer 133 (Fig. 7) which rises from said lever with its upper end in osition opposite the scale, which is preferably marked on the upper surface of the scale-bar 137.

Devices are provided for warning the operator when the end of aline of writing is reached, as follows: 139 indicates, as shown in Figs. 1, 2, 3, 5 and 6, a horizontally arranged sector-shaped frame located at the rearL of the curved frame-plate A*l and which is pivoted upon the up er end of the shaft 67 above the bearinglock 133, so as to swing freely on said shaft. 140, (Fig. 5) is a spring, attached to the block 133 and pressing on a lug which projects to the leftfrom the frame 139, in such manner that said spring tends to turn or swing said frame 139 toward the left side of the machine. A lever 141is also ivoted to the upper' en-d of the shaft 67 an extends forwardly therefrom, the inner end of said lever engaging the shaft at a point beneath the bearing block 133 and the frame 139. The forward end of said lever 141 extends through a horizontal slot in the curved front plate A* of the machine, said slot being located above the scale-bar 137, so that the forward end of said arm 141 projects above the top surface of said scale-bar, as seen in El`he curved forward part of the sectorshaped frame 139 is provided with a depending flange, on the lower edge of which is formed a series of teeth or notches 146, as clearly seen Vin Fig. 6. A spring 142 presses the forward end of the lever 141 upwardly into engagement with the notched edge of said arm'139, said sprin having the form of a leaf-spring extending longitudinally of said arm and the free end of which extends over end bears upon ldie top surface of the curved Aloi-ward part of said frame 139, so that it tends to lift the forward end oi said arm toward the lower notched edge thereof. Said arm 141 has an indicator 143 (Figs. 6 and 7) adapted to move along a arm 141 is provided, inside olf'4 the frame' plate A4, with s. downwardly projecting stud 144 which extends into the path of the rear end o'f a lever 145, pivoted to the lever 135. Said lever 145 extends longitudinally of the lever135 at one side thereof and is pivoted between its ends to said lever 1135 so that its forward end rejects to a oint beneath the key on said ever 135 an Vits rear end is adapted for engagement with the stud 144 when its said forward end is depressed.V 148 indicates a bell-hammer, which is attached to the rear end of an erm upon a vertical roch-shaft 149 pivoted to the frame below the path of the lever 135. Said rock-shaft is actuated or turned in one direction by a coiled spring 150 surrounding the same. Said shaft 149 is provided with a rigid arm 151 which extends rearwardly therefrom and is bent upward at its rear end. 152 is an angular detent lever pivoted on a rearwardly extending arm Af on the plate A4 so as to swing on a vertical axis. Said detent lever 152 is held in position to en a e said arm 151 by the left hand edge 01g t e swinging frame 139, which resses against a depending pin 153 on the orward projecting arm of said detentdever 152, a spring 154 being secured to the arm A8 and pressing on the forwardly projecting arm of the lever 152 in such -manner as to press or carry the pin 153 toward said'rame 139. When the lever 135, movin step-by-step toward the right as the mac ine operates, strikes the pin 144, it swings the frame 139 away from the pin 153. The spring 154 then throws the detent lever 152 out of engagement with the ar1n-151, and the ham mer 148, impelled by the spring 150, strikes the bell 155.

Should the operator not heed the Warning of the bell it is desirablejto lock the keys of the machine and devices are provided for this purpose as. follows: The swinging 4frame 1239 is provided with a curved arm 156 (Figs. 5 and 6) which projects toward the' left inside of the frame-plate A* and the end of which is provided with an upwardly extending projection 157 which is clearly seen in Fig. 6. 158 is a horizontally swinging, hellbrank lever attached to the upper end of a verticallyarranged rock-shaft 159 (Figs. 2 and 5) located at the left hand side of the machine frame. The rock-shaft 159 is provided near its lower end with a forwardly projecting rigid arm 160 adapted to engage a horizontal, endwise sliding, lockbar 161, which extends across the front of the machine in front of the lower part 0f the frame B. Said lockbar 161 is located behind the upright links or bars 87 throu h which the type-bars are operated, as clear y seen in Figs. 1 and 5. Each of the bars 87 is provided with a rearwardly extending tooth 162 at its upper end, which tooth, when the key-lever 86 is lifted, stands above the forward notched edge of the lock-bar 161. In the normal positlon of the lock-bar 161 the several teeth 162 are adapted to pass freely through the notches in the said lockbar and when the latter is moved endwise by the action of the arm 160 on the rockshaft 159, ywhich rock-shaft is operated through contact yof the pin 157 with its arm 158` the teeth 162 engage the teeth of the lock-bar 161 so-that all the key-levers are locked from movement. When the keys are thus locked they may be released b lifting the lever 145 which will release t e tooth 144 and allow the frame 139 to swing back toward the left to its normal position.

The line-locking mechanism illustrated is like that shown in my prior application for United States Letters Patent No. 286,378 for ribbon movement. Said line locking mechanism, as shown in said application is operated by a stop or projection on the inked 'ribbon when one of the ribbon-spools becomes empty. In the machine constructed `as herein described, if, after operating the lever 145, the keys still remain locked, then the operator will know that they are locked' by the ribbon-mechanism, as set forth in said ap lication last referred to.

lior removably securing the paperl to the forwardeurved edge of the paper-holder 12,

`devices are provided, as shown in Figs. 1,2;

3, 14,' Y15, 16, 17 and 18. As more clearly shown in Figs. 14 to 18, 163, 163 indicate a. number of leaf-springs which are secured, each at one end, to the marginal part of the paper-holder and are located opposite the curved face thereof;.the attached ends of the springs having upwardly and hori'zontally extending attaching arms, that are secured to the top surface of the paper-holder. The free ends of said springs are shown as extending toward the right. Each spring 163 has at its free end a pin 164 which pro-- jects upward therefrom and engages the free end of a horizontally arranged link 165, pivotally connected with a swinging frame or plate 166, which is generally o segmental ,as platebeng bent 'or strap tofform wlthmhe of two clips 177, 177 attached to the body of the holder and over-lappin the swin .ing plate. A spring 167 attache to the ho der and acting on the swinging plate tends to press the same toward the left. The said plate is provided with a thumb-piece 168 by which its forward edge may be turned or shifted .toward the right.

The arms or links 165 being pivoted to theswinging plate at their inner ends and connected with the free ends of the springs 163 at their .outer ends, it follows that, when the Swingin frame is drawn toward the right said lin s will push thefree ends of sai springs outwardly, thereby perinittin the paperto be inserted between their sai free 'ends and the forward curved face of the paper-holder. A latch 169 is pivoted loosely7 on the left hand end of the shifting frame 166 in such manner as to swing freely in a vertical plane, said latch extending toward the left from its pivot which is located above the top of said frame. Said latch 169 has a downwardly projecting 4tooth adapted to engage an u Jwardly proJecting datent-arm 170 on the left end of the paper-holder, which .detent-arm 170 is provided with a vertical notch forming a guide for the swinging end of said latch. The tooth of the latch 169, whenengaged with the detent-arm 170, holds the swinging frame 166 in its shifted position to the .right and thereby maintains the several paper clam s in open position., but

by lifting said latc the said frame wlll bev released and thrown toward the left bythe s rings 167, thus brin ing the free ends of t ie springs, which in e ect constitute clampjaws, into pressing contact with the paper and securing the same to the paper-ho der.

In order `to enable several sheets of paper to be attached at one time to the paperholder in such mannerthat -they may be separately removed therefrom, auxiliary attaching -devices are provided, as follows:

Mounted on the under surface of the paperholder vare two radially arranged, endwise slidingY bars 171. Each barat its outer end has a needle 172 (Figi 16) which passes through a hole in the depending flan e which forms the curved front face of tie paper-holder. Each slide 171 is adapted to eheld in its advanced o r retracted position by a sprin detent ,engaging two notches therein,A sai sprin detent having the forni of a ,leaf-spring 73 which is riveted to a plate 176 lsecured by 'screws or otherwise to the under surfaceothe :iper-holder, said body ofthe paper holder, guides or ways in which the said slides are held. 17 4, 174 indicate two spring armswhich are located at the outer face or edge of .the paper-holder and extend horizontally along the same, said arms being shown in the drawing as made of a single piece yor stri of sheet metal having a central arm w'hic i yezt-tends horizontall from the top edge of the strip and is secuir by screws to the top surface of the paperholeler at the center thereof. Said arans 174, 17a are .provided at their free ends with hollow buttons 175, 175 which are arran ed opposite the holes for the needles 1.72, l `9. In the use of ,this device the aper is first clamped .to .the paper-holder y the .spril clamps 163, 163', askhereinbeifore ,describe then theo erator .pushes slides 171, 171 forward, whi e holdin buttons 175,175 .inward or in contact with 51e paper during the :time the slides are bei-ng so .pressed forward. 'ilhe needles will ,then pass through andfasten the several sheets of paper. The springclamps 163, 163 are then released, when'the paper will be supported by the needles 172, 172 alone. lf several sheets lof paper are removed by sim 1y tearing out the holes 4made bythe nee les, leaving the next sheet ositon to lbe written upon. .evices for holding in place the side marins of the sheets at points below the paper holder and for securing accurate locatlonlof the sheets on the paper holder to kgive a uniform left hand margin .on the several sheets, are providedas follows: Rigidly attached to the ysaid paper-holder 12 at the left-hand end thereof A1s a vertical rod 17S which extends downwardly from the aperholder and is attachedat its loweren toan arm 179, which is attached to the lower part of the sliding Vrod 10 that supports the paper-holder. Said'amn 179 extends through a longitudinal slot (Fig. ,4) vin .the hollow shaft 11. `To the said hollow` shaft 11 near its top is rigidly secured (fFigsB and 5) a horizontal, radial arm 180 provided-with a slot or` ening throu h passes. margin-guide 181, in the lform of a strip with a hooked end, is adjustably olampedIto the ann 180 b a clamping-screw 182 which passes througi a slotted part of y which the rod 178 paper and by adjusting said e on :the 

